Base 18 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| * 610: | \[{18^{610}-1\over17}\] | 11 × 19 × 41 × 2711 × 9041 × 366001 × 367831 × 703819 × 34677281 × 25215740585281<14> × 28046945819441<14> × 4110876980385153863<19> × 107508304778622281241241<24> × 42043094784045697444762222723<29> × 12051545770317059234807079730391<32> × 66330542118642776825615248342578331139323<41> × 1450744996988333189921892673782384233809551686747567<52> × 1308353965477068502951717372930838942138419838296525913500788256921335386160036178470946678242725236140976184171871754685495493205677730297967857094362272704731174174482072705539614291624525460534974983492391262429310864796067281<229> × [22241564111771189421078995878944887488555220238147523517555292170325344414188931261491439283729207421498951189723076203598306203871950268389030965713480118741379866606333015317232194849790005406445644550718635445036902858264463073855817773419398898123551798127534966801465866847891<281>] |